161 results about "Diaphragm compressor" patented technology

The invention discloses a multifunctional integrated gas control system for a dilution refrigerator, and particularly relates to the field of refrigeration and low-temperature engineering, which comprises a liquid nitrogen cold trap, a gas buffer tank, an integrated valve box, a dilution refrigeration internal circulation pipeline, a diaphragm compressor, a roots pump, a turbo molecular pump and a vacuum suction pump set. According to the system, a highly-integrated valve box module is used and is responsible for implementing gas circuit control on different stages such as dilution refrigeration cycle starting, operation and shutdown rewarming; according to the invention, conductance optimization and heat loss reduction are carried out on gas paths with different temperature zones and different pressures, high air tightness of a full temperature zone from room temperature to extremely low temperature is ensured, the reliability and the automation degree of the dilution refrigerating machine are improved, and very positive significance is provided for practicability of a dilution refrigerating system.

The invention discloses a diaphragm compressor state monitoring method based on dynamic oil pressure and intake and exhaust pressure, and relates to the technical field of diaphragm compressors. The dynamic oil pressure of the compressor is monitored, the running state of the compressor is monitored according to the matching relation between the oil pressure and the air pressure, the fault is recognized in time, and even the fault is pre-judged, so that breakage of a diaphragm or overpressure in a cavity is avoided, and the loss caused by the fault of the compressor is reduced. The method comprises the following steps that S1, the set oil spill pressure of an overflow valve and the air inlet pressure and the exhaust pressure of a compressor are obtained; s2, according to the set oil spilling pressure, air inlet pressure and exhaust pressure, the oil pressure high reference and the oil pressure low reference of the running state of the diaphragm compressor are set; s3, measuring the running dynamic oil pressure of the compressor, and obtaining an oil pressure peak value and an oil pressure minimum value; and S4, the obtained oil pressure peak value and the obtained oil pressure minimum value are compared with the oil pressure high reference and the oil pressure low reference, and the running state of the compressor is judged according to the comparison result.

The invention relates to the technical field of monitoring control, and discloses a gas pressure real-time monitoring method and system of a diaphragm compressor. The method comprises the steps that diaphragm surface vibration signals are collected through a three-axis acceleration sensor, and vibration time domain data are obtained; a main frequency component, a power spectrum density value and a frequency band power spectrum integral value are extracted through fast Fourier transform, and vibration spectrum features are formed; according to the corresponding relation between the frequency and the pressure, the vibration characteristic parameters are subjected to weighted calculation, and a real-time gas pressure feedback value is obtained; the system sets upper and lower limits of pressure, a change rate and a fluctuation adjustment threshold value, automatically adjusts and controls the pressure, and outputs a corresponding adjustment instruction when the pressure exceeds any threshold value. The accuracy and reliability of gas pressure monitoring of the diaphragm compressor are improved.

The invention discloses a treatment process method for improving the strength and plasticity of a hydrogen isolation diaphragm and the hydrogen isolation diaphragm. The treatment process method comprises the following steps: S1, carrying out high-frequency vibration and static pressure coupling treatment on the hydrogen isolation diaphragm; and S2, the hydrogen isolation diaphragm is subjected to snakelike line rolling treatment. The hydrogen isolation diaphragm is treated by the treatment process method. According to the treatment process method, high-frequency vibration and static pressure coupling treatment is carried out on the hydrogen isolation diaphragm, and a gradient nanostructure and residual compressive stress are introduced into the surface layer of the hydrogen isolation diaphragm, so that the strength and plasticity of the hydrogen isolation diaphragm are remarkably improved, and the hydrogen embrittlement sensitivity is reduced; therefore, the service life of the hydrogen isolation diaphragm in the high-pressure hydrogen diaphragm compressor is prolonged, and the safety and reliability of equipment are improved.

The invention discloses a partition leakage detection structure of a diaphragm compressor, and relates to the technical field of diaphragm compressors. The sealing effect between the diaphragm and the cylinder cover is enhanced, leakage of the gas side diaphragm, leakage of the oil side diaphragm and leakage of diaphragm breakage can be detected respectively, and false alarm of diaphragm breakage is avoided. The leakage detection structure comprises an embedded membrane head structure and a leakage detection structure. The embedded membrane head structure comprises a gas side membrane head, an oil side membrane head, an oil distribution disc and a membrane; the leakage detection structure comprises a gas leakage detection device, a hydraulic oil leakage detection device and a diaphragm rupture detection device; a gas leakage detection channel is formed in the gas side film head; a first hydraulic oil leakage detection channel is formed in the oil distribution disc; a second hydraulic oil leakage detection channel is formed in the oil side film head; a hydraulic oil leakage detection device is arranged at an outlet of the second hydraulic oil leakage detection channel; a diaphragm rupture detection opening is formed in the oil side diaphragm head; and a diaphragm rupture detection device is arranged at the diaphragm rupture detection port.

A diaphragm compressor upper diaphragm head structure and a design method thereof, the upper diaphragm head is formed by combining and splicing involute segment B1B2, straight line segment B2B3, involute segment B3B4, involute segment B4B5, straight line segment B5B6 and involute segment B6B7 to form a diaphragm compressor diaphragm cavity profile line; the diaphragm cavity profile line is rotated around the center axis of the upper diaphragm head to obtain a diaphragm cavity surface S2, i.e. a gas side diaphragm cavity surface on the lower side of the upper diaphragm head, which comprises a surface S21 formed by rotating involute segment B1B2 and involute segment B6B7, a surface S22 formed by rotating straight line segment B2B3 and straight line segment B5B6, and a surface S23 formed by involute segment B3B4 and involute segment B4B5; an inclination angle is arranged between an air inlet valve cavity plane S3 on the upper side of the upper diaphragm head and an exhaust valve cavity plane S4; the involute segment is obtained by substituting basic generating equation of the involute into respective characteristic parameter base circle radius and base circle characteristic angle. The diaphragm compressor clearance volume is reduced.

A diaphragm compressor with membrane cavity profile edge correction and a profile design method, the diaphragm compressor has a membrane cavity profile formed by combining a first membrane cavity profile and a second membrane cavity profile according to a segmented proportion, the first membrane cavity profile is a single exponential membrane cavity profile, and the second membrane cavity profile is used for edge stress correction; the maximum stress of the middle part of the membrane cavity profile is reduced by adjusting the design parameters of the first membrane cavity profile, and the maximum stress of the edge part of the membrane cavity profile is reduced by adjusting the design parameters of the second membrane cavity profile; the first membrane cavity profile and the second membrane cavity profile are continuous, monotonous and without sharp points, forming a combined edge correction diaphragm compressor membrane cavity profile. Under the premise of meeting the design requirements, the design parameters of the first membrane cavity profile and the second membrane cavity profile are adjusted through multi-objective parameter optimization calculation. The present application can overcome the problems of insufficient optimization parameters and limited optimization range of traditional single exponential profile design, and can optimize the reliability of the diaphragm compressor and increase the service life of the diaphragm.

This utility model discloses a diaphragm compressor with a base, including a compressor body. A pressure gauge is mounted on the top of the compressor body, a fixing block is welded to the top of the pressure gauge, a bushing is welded to the top of the fixing block, a first external threaded rod is sleeved inside the bushing, a fixing frame is welded to the surface of the first external threaded rod, and a cover plate is welded to one end of the fixing frame. This diaphragm compressor with a base, by mounting a pressure gauge on the top of the compressor body, welding a fixing block to the top of the pressure gauge, and simultaneously welding a bushing to the top of the fixing block, allows the first external threaded rod to be sleeved inside the bushing, and a fixing frame to be welded to the surface of the first external threaded rod, until the pressure gauge on the pressure gauge is exposed. Then, a control device transmits power from a power supply to a light strip, which illuminates the pressure gauge, making it easier and clearer to observe.

A method and product for generating the membrane cavity profile of a diaphragm compressor based on the brachistochrone curve are disclosed. The method includes establishing an XOY coordinate system; defining a first rolling circle S1 and a second rolling circle S2, centered above and below the X-axis and tangent to it; the two rolling circles moving along the X-axis with angular velocity ω while remaining tangent to the X-axis and moving in opposite directions; the trajectory ONQ of a feature point initially located at the origin O on each rolling circle, traversed by the first rolling circle S1, serves as the membrane cavity generation line, forming a cycloid OMK with the movement of the second rolling circle S2; defining the membrane cavity radius, membrane cavity deflection, and the ratio of the radii of the two generated rolling circles, establishing a series of membrane cavity profiles; and selecting the optimal profile from these profiles based on specific conditions to obtain a membrane cavity profile that meets the requirements. The membrane cavity profile generation method proposed in this invention is a multi-parameter profile control method with adjustable characteristic tilt angles and the ratio of the radii of the two generated rolling circles, offering greater design flexibility.

The utility model discloses an online detection device for a diaphragm compressor. The online detection device comprises a supporting mechanism, a longitudinal moving mechanism, a transverse moving mechanism, a telescopic mechanism, a detection ray generator assembly and a detection ray receiving plate assembly, the longitudinal moving mechanism is mounted on the supporting mechanism; the two ends of the transverse moving mechanism are located on the longitudinal moving mechanism respectively. The telescopic mechanism is suspended below the transverse moving mechanism, and the detection ray generator assembly and the detection ray receiving plate assembly are respectively mounted on the transverse moving mechanism. According to the utility model, not only can the running state and damage condition of the compressor and related parts be detected in real time, but also the positions of the detection ray generator assembly and the detection ray receiving plate assembly can be adjusted according to different types and sizes of diaphragm compressors and different parts of the diaphragm compressors, so that the application range is expanded; and the method is safe, efficient and high in practicability.

The present invention discloses a flow stabilizing device for a diaphragm compressor, which belongs to the technical field of flow stabilizing devices for filling pipelines of diaphragm compressors. The air inlet of the diaphragm compressor body is connected to an air inlet pipe, and a buffer assembly is provided at the air inlet pipe. The buffer assembly includes an inflatable airbag and a buffer gas tank. The two ends of the air inlet pipe are connected to the air inlet of the diaphragm compressor body and the buffer gas tank. The inflatable airbag is sleeved on the surface of the air inlet pipe, and the two ends of the inflatable airbag contact the surface of the air inlet and the buffer gas tank after being inflated. The present invention utilizes the deformation of the inflatable airbag to buffer the vibration of the air inlet pipe, and the inflatable airbag wraps the air inlet pipe in all directions, which can prevent the external temperature from affecting the gas inside the air inlet pipe, reduce the air pressure inside the air inlet pipe affected by temperature changes as much as possible, reduce the amplitude of the air inlet pipe affected by external factors, and achieve stable delivery of pressurized gas.

The invention provides a novel diaphragm head assembly for a diaphragm compressor, and relates to the technical field of diaphragm compressors. The novel diaphragm head assembly for the diaphragm compressor comprises a connecting clamping seat, a transmission inner seat is fixedly connected to one side of the connecting clamping seat, a connecting flange is fixedly connected to the end, away from the connecting clamping seat, of the transmission inner seat, and a first connecting seat is welded to the end, away from the transmission inner seat, of the connecting flange; the inner wall of the first connecting base is slidably connected with a pushing terminal, one end of the pushing terminal is connected with an internal sliding terminal, and the outer wall of the internal sliding terminal is sleeved with a plurality of sealing rings. The diaphragm head assembly for the diaphragm compressor has the advantages that the sealing performance of the diaphragm head assembly can be effectively improved, leakage of gas and oil liquid is reduced, heat in the assembly can be quickly dissipated, the problems that due to high temperature, a diaphragm piece is aged, and abrasion of parts is aggravated are solved, and the purity of compressed gas is improved.

The utility model belongs to the technical field of metal material fatigue tests, and particularly relates to a testing device for diaphragm compressor research and development, which comprises a support and a testing assembly, the support is a rectangular frame-shaped support, clamping assemblies are arranged in the middle of the inner side of a left frame and the middle of the inner side of a right frame of the support, and the testing assembly comprises a hydraulic cylinder and a testing mold. The fixed end of the hydraulic cylinder is connected with the inner side of an upper side frame of the support, the telescopic end of the hydraulic cylinder is connected with the upper side of the test mold, the test mold comprises an upper mold, a lower mold and a connecting plate, and the connecting plate is fixedly connected with the rear sides of the upper mold and the lower mold. And a periodic load test is carried out, and the stress state of the compressor in actual service is simulated to the greatest extent, so that the data of the symmetric bending fatigue test of the metal diaphragm is true and credible.

The utility model provides a high-efficiency diaphragm compressor, and belongs to the technical field of diaphragm compressors. The high-efficiency diaphragm compressor comprises a driving structure and a ventilation structure fixed to one side of the driving structure, the driving structure comprises a bottom frame and a suction part, the suction part is fixed to the top of the bottom frame, the ventilation structure comprises an air outlet part and an air inlet part, the air outlet part is fixed to one side of the suction part, and the air inlet part comprises an air inlet frame. The air inlet frame is fixed to one side of the suction part, an air inlet ring is fixed in the air inlet frame, a second guide rod is slidably connected to the interior of the air inlet ring, a second limiting piece is fixed to the end of the second guide rod, and a second blocking plate is slidably connected to one side of the second guide rod. According to the utility model, through double air inlet and air outlet of the air inlet piece and the air outlet piece, the air can be compressed at any time when the diaphragm moves back and forth, so that the compression efficiency of the compressor is improved.

The invention relates to the technical field of electronic data processing, and discloses a detection data processing method and system for a helium leak detector for a diaphragm compressor, and the method comprises the steps: obtaining an original helium concentration time sequence signal and a periodic frequency parameter of the stroke of the diaphragm compressor; constructing a notch filter bank, and filtering the original helium concentration time sequence signal to obtain a preliminary signal; performing wavelet transform decomposition on the initial signal, performing threshold processing on a wavelet coefficient, and then performing reconstruction to obtain a de-noised signal; iterative fitting is carried out on the de-noised signal, a dynamic background baseline is estimated, and a background correction signal is obtained; calculating a first-order time derivative sequence, a local information entropy sequence and morphological correlation; and when the amplitude of the first-order time derivative sequence is continuously higher than a first threshold value, the local information entropy sequence is lower than a second threshold value, and the morphological correlation degree is higher than a third threshold value, judging that leakage occurs. According to the invention, multi-dimensional and high-confidence identification can be carried out on the leakage event, and the detection sensitivity, the anti-interference capability and the reliability of tiny leakage are improved.

The utility model discloses a diaphragm adjusting device of a diaphragm compressor under low-negative-pressure air inlet. The diaphragm adjusting device comprises a piston assembly, a crosshead assembly, an air distribution disc and an oil distribution disc. The three metal diaphragms are arranged between the gas side diaphragm cavity and the oil side diaphragm cavity in an overlapped mode, and the middle diaphragm is provided with a guide groove to be communicated with the leakage detection opening; the electromagnet is arranged on the surface layer, close to the diaphragm side, of the oil distribution disc; the piezoelectric ceramics are respectively fixed in the machine body assembly and are close to an upper dead center and a lower dead center of the crosshead assembly; the springs are fixed on the two sides of the machine body assembly, are insulated from the crosshead assembly and are used for triggering the piezoelectric ceramics; the electromagnets are electrically connected with the piezoelectric ceramics respectively; the switch is attracted and controlled by the electromagnet to switch on and off of a circuit; the slide rheostat is connected in series with the electromagnet to adjust the adsorption force; the spring impacts the piezoelectric ceramic when the crosshead assembly moves to the upper stop point and the lower stop point, current is excited to enable the electromagnet to attract the switch, and then power-on and power-off of the electromagnet are controlled.

The utility model discloses an assembled hoisting structure for overhauling a cylinder head of a diaphragm compressor, which relates to the technical field of overhauling of diaphragm compressors and comprises a chain hoist, a support arm, a hoisting ring, a rotating component and a limiting component. A plug welding nut is arranged at the end of the upper side of the supporting arm, a screw in threaded connection with the plug welding nut is arranged on the hanging ring, a hook at the top of the chain hoist is hung in the hanging ring, and the limiting assembly is arranged on the supporting arm and the rotating assembly and used for limiting the supporting arm and the rotating assembly. The cylinder head of the diaphragm compressor can be easily hoisted through the chain hoist, the supporting arm can be easily adjusted to drive the position of the cylinder head of the diaphragm compressor by directly rotating the rotating handle to assist rotation, the supporting arm is fixed to a certain position through the arranged lock pin, and the stability of the device is improved.

A kind of hydraulic oil supplement system and supplement method of diaphragm compressor, control module judges that oil discharge pressure signal is less than the preset low alarm threshold of oil discharge pressure, and exhaust pressure signal is less than the preset low alarm threshold of exhaust pressure, and exhaust flow signal is greater than the preset high alarm threshold of exhaust flow, then control module will action instruction be given to actuating mechanism, actuating mechanism automatically rotates the adjusting screw cover on oil supplement plunger pump, it moves towards the direction of eccentric sleeve, to increase the movement stroke of plunger, to increase the oil supplement amount of oil supplement plunger pump.The present application can adjust the oil supplement amount of oil supplement plunger pump on line without stopping diaphragm compressor and disassembling cylinder head component, to supplement the hydraulic oil that leakage increases due to piston sealing element failure or sealing performance weakening of diaphragm compressor, reduce the great workload brought by shutdown replacement sealing element, and avoid the economic loss caused by shutdown.

The utility model provides an oil-gas separation mechanism of a diaphragm compressor, and belongs to the technical field of compressors. The oil-gas separation mechanism of the diaphragm compressor comprises a kinetic energy structure and a filtering structure arranged at the top of the kinetic energy structure, the kinetic energy structure comprises a bottom frame and a suction part, the suction part is fixed to the top of the bottom frame, the filtering structure comprises an air inlet part and a filtering part, the air inlet part is arranged at the top of the suction part, and the filtering part is arranged at the top of the suction part. The filtering part comprises an air outlet pipe, the air outlet pipe is in threaded connection with the interior of the air inlet part, a second supporting strip is fixed in the air outlet pipe, a second spring is fixed to the top of the second supporting strip, a second sealing plate is fixed to the end of the second spring, and a filtering frame is connected with the interior of the air outlet pipe in a sleeved mode. According to the oil-gas separation device, the air outlet pipe and the plugging piece are detachable, so that the filter cotton is extremely convenient to replace, oil molecules in air can be adsorbed through multiple holes and tension on the filter cotton, and the purpose of oil-gas separation is achieved.

The application relates to a diaphragm head assembly and a diaphragm compressor. The diaphragm head assembly comprises a cylinder, a guide oil disc, an oil distribution disc, a cylinder cover and a diaphragm. The cylinder is provided with a first channel and a chamber which are connected with each other. The guide oil disc is arranged in the chamber and is opposite to the first channel in the axial direction of the guide oil disc. The guide oil disc is spaced apart from the wall surface of the chamber so that an oil distribution area is defined between the surface of the guide oil disc and the opposite wall surface of the chamber. The oil distribution disc is provided with a first through hole and an oil side diaphragm chamber which are connected with each other. The oil distribution disc is arranged on the side of the guide oil disc which is away from the first channel in the axial direction of the guide oil disc. The oil distribution disc is spaced apart from one side of the guide oil disc. The first through hole is communicated with the oil distribution area. The cylinder cover is connected with the cylinder. The diaphragm head assembly can avoid the center of the diaphragm being first attached to the wall surface of the gas side diaphragm chamber before the edge of the diaphragm, thereby avoiding the problem that the gas in the gas side diaphragm chamber cannot be completely discharged during the compression of the exhaust gas, reducing the clearance volume of the diaphragm compressor and improving the volumetric efficiency of the diaphragm compressor.

The invention discloses a diaphragm compressor multi-stage compression structure based on four cylinder heads and an application system, and relates to the technical field of diaphragm compressors, the structure comprises a box body, a flywheel is installed at the upper end of the box body, and a first middle body and a second middle body are installed on the front side and the rear side of the left end of the box body respectively. The single-unit integrated design is adopted, the compression stage number is flexible and adjustable, the customized requirements of customers for gas pressure and displacement can be accurately met, and system configuration is simplified to adapt to multiple scenes; multi-stage compression can be achieved through a single compressor, the overall coordination of the system is improved, connecting pipelines are reduced, the pressure loss and the leakage risk are reduced, and the operation stability and reliability are enhanced; the economical efficiency and the operation efficiency are further promoted to realize double optimization, the early-stage investment cost and the occupied area are reduced, and the efficiency loss and the throttling loss in operation are reduced; therefore, the operation and maintenance complexity is greatly reduced, the operation logic and control system is simplified, the maintenance workload and cost are reduced, and the production continuity is guaranteed.

The present application relates to a metal diaphragm compressor metal diaphragm hydrogen-present performance testing device, and relates to the compressor material testing field, the device comprises a pulse tube, a metal diaphragm is located in the pulse tube, and the pulse tube is provided with a high temperature heat exchange area at one side of the metal diaphragm. The pulse tube is provided with a low-temperature heat exchange area located on the other side of the metal diaphragm, a temperature difference exists between the high-temperature heat exchange area and the low-temperature heat exchange area, and the high-temperature heat exchange area and the low-temperature heat exchange area are separated through the metal diaphragm. The application has the effect of being convenient to test the hydroforming performance of the metal diaphragm.

The invention discloses a cold loss reducing method for a low-temperature ethylene storage system with the total storage capacity smaller than or equal to 500 cubic meters. The cold loss reducing method comprises the following steps that S1, when the difference value between the actually-measured pressure value of a low-temperature ethylene storage tank and the control high-limit pressure value of the tank body is 0.02 MPaG, the low-temperature ethylene storage tank is started; starting a variable-frequency ethylene delivery pump, discharging high-temperature liquid-phase ethylene at the bottom of the low-temperature ethylene storage tank by an ice maker unit, pressurizing and cooling, and spraying the low-temperature liquid-phase ethylene through a liquid-phase ethylene distributor arranged in the top of the low-temperature ethylene storage tank to cool and depressurize the low-temperature ethylene storage tank; and S2, when the temperature of liquid-phase ethylene at the lower part of the low-temperature ethylene storage tank is reduced to-80 DEG C, closing the variable-frequency ethylene conveying pump, and completing loss reduction of the ice making unit. According to the method, the same cold loss reducing effect can be achieved by replacing a diaphragm type compressor and an ice machine set without using the loss reducing device of the diaphragm type compressor and the ice machine set, the production cost is effectively reduced, the production safety is improved, and the production energy consumption is reduced.

The present application relates to the technical field of diaphragm compressor, and particularly relates to a diaphragm compressor flow regulating method. The specific method comprises the following steps: connecting the oil side membrane cavity to the liquid accumulator oil cavity of a plurality of liquid accumulators through pipelines; calculating Δq v ; calculating the required regulating flow of the diaphragm compressor; comparing the required regulating flow with Δq v of the liquid accumulator, opening the control valve of the liquid accumulator matched with the required regulating flow of the diaphragm compressor; obtaining the actual flow of the diaphragm compressor after the diaphragm compressor is adjusted and stabilized; and terminating the regulating program when the actual flow of the diaphragm compressor satisfies the condition of (1-λ)q g ≤q≤(1+λ)q g . The present application solves the problems of insufficient pressurization capacity, unbalanced pressure ratio distribution and poor working condition adaptability of the diaphragm compressor in the existing hydrogenation station application scenario by adjusting the flow of a certain stage of the diaphragm compressor for hydrogenation station.

This invention discloses a non-destructive condition monitoring and fault prediction system for a diaphragm compressor, comprising a data acquisition module, a condition monitoring module, and a fault prediction module. The data acquisition module is used to non-invasively acquire multi-source physical signals during the operation of the diaphragm compressor. The condition monitoring module is used to receive and process the raw signals transmitted by the data acquisition module. The fault prediction module is used to perform trend prediction and lifespan estimation based on historical health time-series data and feature sequences output by the condition monitoring module. This invention achieves comprehensive perception of the critical states of the diaphragm compressor by integrating multi-source sensors and employing a non-invasive signal acquisition method. The system utilizes multi-dimensional feature extraction and fusion analysis technology to assess the health status of the diaphragm in real time and construct a predictive model based on time-series data, providing early warning of potential faults and predicting the remaining service life.

The invention discloses a hydrogen refueling station diaphragm compressor system and a control method. The technical problem that an O-shaped ring of an air inlet and outlet valve of a diaphragm compressor is frequently melted and fails is mainly solved. The diaphragm compressors in the diaphragm compressor system of the hydrogen refueling station are respectively connected with different hydrogen inlet pipelines through corresponding branches, so that the diaphragm compressors working under a low-pressure working condition can realize high-pressure hydrogen inlet by switching high-pressure hydrogen inlet pipelines, and the diaphragm compressors are cooled through high-pressure operation; and meanwhile, based on the T-S control model and a corresponding clustering radius self-adaptive adjustment mechanism, dynamic adaptive adjustment of the operating parameters of the diaphragm compressor system is achieved, so that the purpose of stepped increase of the operating duration of the diaphragm compressor is achieved, and the operating efficiency and safety of the diaphragm compressor system are improved.

The utility model provides an annular air valve and a diaphragm compressor, and relates to the technical field of diaphragm compressors, the annular air valve provided by the utility model comprises a valve seat, a valve cover, a valve plate and a spring, the valve seat is provided with a runner hole, and the valve seat is connected with the valve cover; the valve cover is sleeved with the valve plate, and the valve plate is opposite to the runner hole; the spring is mounted between the valve cover and the valve plate, and the spring has the trend of driving the valve plate to block the runner hole; the valve cover is provided with a guide structure matched with the valve plate, so that the valve plate slides along the guide structure relative to the valve cover, and the valve plate is limited to rotate around the valve cover. The valve plate is more suitable for being made of metal materials, so that the pressure resistance is improved, the valve plate can be prevented from rotating, the spring is prevented from bearing lateral force, the risk that the spring is damaged and broken is reduced, and the service life of the annular air valve is prolonged.

The novel sealing structure comprises an air cavity, an oil cavity and a diaphragm set arranged between the air cavity and the oil cavity, sealing grooves are formed in the sides, close to the diaphragm set, of the air cavity and the oil cavity, and metal C-shaped rings are arranged in the sealing grooves. The utility model relates to the technical field of compressor air cylinder sealing, an existing two-layer sealing mode is improved into a multi-layer sealing mode, a plurality of hard contact sealing faces are formed by arranging the metal C-shaped ring and the sealing lines, layer-by-layer pressure reduction is achieved, the sealing effect is good, and the sealing effect is good. The sealing reliability of the diaphragm compressor cylinder is effectively improved, and the possibility of gas leakage is reduced; the metal C-shaped ring is adopted to replace an O-shaped rubber ring to serve as a main sealing piece, the strength is greatly improved, higher pressure can be borne, and the sealing problem of the large-diaphragm-cavity high-pressure diaphragm compressor air cylinder under high pressure is successfully solved.

The application relates to the technical field of diaphragm compressors and discloses a design method of a self-adaptive compensation pressure pipe based on a butterfly spring, which comprises the following steps: S1, determining design boundary conditions and performance indexes; S2, calculating the axial relative displacement Delta L between a pressure pipe and adjacent cooling components caused by thermal deformation; S3, performing parameterized modeling and preliminary selection on a butterfly spring group, determining the rigidity and the maximum compression amount of a single butterfly spring, and establishing a total rigidity model of the butterfly spring group; S4, performing system rigidity matching and checking, establishing a load fluctuation control equation, and making the actual load fluctuation rate meet the conditions through parameter optimization iteration; S5, determining the final combination of the parallel quantity n, the serial quantity m and the total initial compression amount of the butterfly spring group according to the optimization result; and S6, completing the design of the pressure pipe structure based on the final parameter combination. The application solves the problem of sealing performance attenuation under long-term variable working condition operation.